MOTOROLA CMOS LOGIC DATA
6–245
MC14508B
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
SWITCHING CHARACTERISTICS*
(CL = 50 pF, TA = 25
_
C)
All Types
Characteristic
Symbol
VDD
Min
Typ #
Max
Unit
Output Rise and Fall Time
tTLH, tTHL = (1.5 ns/pF) CL + 25 ns
tTLH, tTHL = (0.75 ns/pF) CL + 12.5 ns
tTLH, tTHL = (0.55 ns/pF) CL + 9.5 ns
tTLH, tTHL
5.0
10
15
—
—
—
100
50
40
200
100
80
ns
Propagation Delay Time, Dn or MR to Q
tPLH, tPHL = (1.7 ns/pF) CL + 135 ns
tPLH, tPHL = (0.66 ns/pF) CL + 57 ns
tPLH, tPHL = (0.5 ns/pF) CL + 35 ns
tPLH, tPHL
5.0
10
15
—
—
—
220
90
60
440
180
120
ns
Master Reset Pulse Width
tWH(R)
5.0
10
15
200
100
70
100
50
35
—
—
—
ns
Master Reset Removal Time
trem
5.0
10
15
30
25
20
– 15
0
0
—
—
—
ns
Strobe Pulse Width
tWH(S)
5.0
10
15
140
70
40
70
35
20
—
—
—
ns
Setup Time
Data to Strobe
tsu
5.0
10
15
50
20
10
25
10
5.0
—
—
—
ns
Hold Time
Strobe to Data
th
5.0
10
15
50
35
35
20
10
10
—
—
—
ns
3–State Propagation Delay Time
Output “1” to High Impedance
tPHZ
5.0
10
15
—
—
—
55
35
30
170
100
70
ns
Output “0” to High Impedance
tPLZ
5.0
10
15
—
—
—
75
40
35
170
100
70
High Impedance to “1” Level
tPZH
5.0
10
15
—
—
—
80
35
30
170
100
70
High Impedance to “0” Level
tPZL
5.0
10
15
—
—
—
105
50
35
210
100
70
* The formulas given are for the typical characteristics only at 25
_
C.
#Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
PIN ASSIGNMENT
D1A
D0A
DISA
STA
MRA
D2A
Q1A
Q0A
D2B
Q2B
D3B
Q3B
VDD
DISB
D0B
Q0B
5
4
3
2
1
10
9
8
7
6
14
15
16
17
18
19
20
13
11
12
21
22
23
24
MRB
STB
D1B
Q1B
Q3A
VSS
D3A
Q2A
Summary of Contents for CMOS Logic
Page 1: ......
Page 5: ...iv MOTOROLA CMOS LOGIC DATA ...
Page 6: ...Master Index 1 ...
Page 12: ...Product Selection Guide 2 ...
Page 17: ...The Better Program 3 ...
Page 20: ...B and UB Series Family Data 4 ...
Page 25: ...CMOS Handling and Design Guidelines 5 ...
Page 32: ...CMOS Handling and Design Guidelines 5 ...
Page 39: ...Data Sheets 6 ...
Page 234: ...MOTOROLA CMOS LOGIC DATA MC14174B 6 196 FUNCTIONAL BLOCK DIAGRAM TIMING DIAGRAM ...
Page 238: ...MOTOROLA CMOS LOGIC DATA MC14175B 6 200 FUNCTIONAL BLOCK DIAGRAM TIMING DIAGRAM ...
Page 555: ...CMOS Reliability 7 ...
Page 561: ...Equivalent Gate Count 8 ...
Page 563: ...Packaging Information Including Surface Mounts 9 ...
Page 571: ......